<!DOCTYPE HTML>
<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=1920">
    <title>index</title>
    <style>
        * {
            box-sizing: border-box;
            padding: 0;
            margin: 0;
        }

        img {
            position: absolute;
            top: 20px;
            left: 20px;
            width: 200px;
            height: 200px;
            border: 3px solid #fff;
            z-index: 2;
        }
        body{
            width: 1920px;
            height: 1080px;
        }
    </style>
</head>
<body>

<img id="qrcode">

</body>
<script src="js/blitz.js"></script>
<script src="js/QrcodeImage.js"></script>
<script src="js/index.js"></script>
</html>